Making a Better ATP Binding Protein (image) Arizona State University Caption The three-dimensional structure (ribbon diagram) of protein DX as a crystallogrpahic dimer. The zinc metal ion is shown in orange and the chloride anion at the dimer interface in red, and the ATP ligand is colored by atom type. DX has been evolved in the lab to improve protein stability and can bind ATP tighter than similar proteins found in nature. Credit John Chaput, the Biodesign Institute at Arizona State University Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.